Recombinant human E-selectin/CD62E protein

E-selectin, also known as CD62 antigen-like family member E (CD62E), is a member of the Selectin family. It is a selectin cell adhesion molecule expressed only on endothelial cells activated by cytokines. Like other selectins, it plays an important part in inflammation. The local release of cytokines IL-1 and TNF-α by Macrophages in the inflamed tissue induces the over-expression of E-selectin on endothelial cells of nearby blood vessels. As the inflammatory response progresses, chemokines released by injured tissue enter the blood vessels and activate the rolling leukocytes, which are now able to tightly bind to the endothelial surface and begin making their way into the tissue. While numerous pieces of in vitro and clinical evidence continue to support this hypothesis of E-selectin-mediated cancer metastasis, in vivo studies of cancer metastasis have shown that E-selectin knockout only minimally affects leukemic cell adhesion to bone immediately following injection. Recombinant human E-selectin, fused to His-tag at C-terminus, was expressed in insect cell and purified by using conventional chromatography techniques.